Catalyst system for olefin oligomerization, and method for olefin oligomerization using the same

Abstract

The present invention relates to a compound represented by Chemical Formula 1, a catalyst system for olefin oligomerization comprising the same, and a method of olefin oligomerization using the same.

The invention claimed is: 
     
       1. A catalyst system for olefin oligomerization, comprising a compound represented by the following Chemical Formula 1, a source of a transition metal, and a cocatalyst: 
       
         
           
           
               
               
           
         
         wherein, in Chemical Formula 1, 
         A is represented by the following Chemical Formula 2, 
       
       
         
           
           
               
               
           
         
         X is a C 1-20  alkylene or a C 6-14  arylene, 
         R 1  to R 4  are independently a C 1-20  alkyl, a C 2-20  alkenyl, a C 6-14  aryl, a C 6-14  aryl substituted with a C 1-4  alkyl, a C 1-4  alkyl substituted with a C 6-14  aryl, or a C 6-14  aryl substituted with a C 1-4  alkoxy, 
         R 5  to R 14  are independently hydrogen, a C 1-20  alkyl, a C 2-20  alkenyl, a C 6-14  aryl, a C 6-14  aryl substituted with a C 1-4  alkyl, a C 1-4  alkyl substituted with a C 6-14  aryl, or a C 6-14  aryl substituted with a C 1-4  alkoxy. 
       
     
     
       2. The catalyst system according to  claim 1 , wherein X is methylene or phenylene. 
     
     
       3. The catalyst system according to  claim 1 , wherein R 1  to R 4  are identical to each other. 
     
     
       4. The catalyst system according to  claim 1 , wherein R 1  to R 4  are phenyl. 
     
     
       5. The catalyst system according to  claim 1 , wherein R 5  and R 6  are hydrogen. 
     
     
       6. The catalyst system according to  claim 1 , wherein R 7  and R 8  are identical to each other, and are hydrogen or methyl. 
     
     
       7. The catalyst system according to  claim 1 , wherein R 9  is hydrogen or iso-propyl. 
     
     
       8. The catalyst system according to  claim 7 , wherein R 10  is hydrogen. 
     
     
       9. The catalyst system according to  claim 1 , wherein R 11  to R 13  are hydrogen. 
     
     
       10. The catalyst system according to  claim 1 , wherein R 14  is hydrogen or methyl. 
     
     
       11. The catalyst system according to  claim 1 , wherein the compound is selected from the group consisting of the following compounds: 
       
         
           
           
               
               
           
         
       
     
     
       12. The catalyst system according to  claim 1 , wherein the source of a transition metal is at least one selected from the group consisting of chromium(III)acetylacetonate, tris(tetrahydrofuran)chromium trichloride, chromium(III)-2-ethylhexanoate, chromium(III)tris(2,2,6,6-tetramethyl-3,5-heptanedionate), chromium(III)benzoylacetonate, chromium(III)hexafluoro-2,4-pentanedionate, and chromium(III)acetate hydroxide. 
     
     
       13. The catalyst system according to  claim 1 , wherein the cocatalyst is at least one selected from the group consisting of the compounds represented by the following Chemical Formulae 3 to 5:
   —[Al(R 15 )—O] c —  [Chemical Formula 3]
 
 in Chemical Formula 3, 
 R 15 's are independently a halogen, a C 1-20  alkyl, or a C 1-20  haloalkyl, and 
 c is an integer equal to or greater than 2,
   D(R 16 ) 3    [Chemical Formula 4]
 
 
 in Chemical Formula 4, 
 D is aluminum or boron, and 
 R 16  is a C 1-20  alkyl or a C 1-20  haloalkyl,
   [L-H] + [Q(E) 4 ] −   [Chemical Formula 5]
 
 
 in Chemical Formula 5, 
 L is a neutral Lewis base, 
 [L-H ] +  is a Bronsted acid, 
 Q is B or Al, and 
 E's are independently a C 6-20  aryl or a C 1-20  alkyl, and are unsubstituted or substituted with at least one substituent selected from the group consisting of a halogen, a C 1-20  alkyl, a C 1-20  alkoxy, and a phenoxy. 
 
     
     
       14. A method for olefin oligomerization, comprising the step of oligomerizing olefins in the presence of the catalyst system for olefin oligomerization according to  claim 1 .